CN216675878U - Kirschner wire fixing device - Google Patents

Abstract

The utility model discloses a fixing device with a Kirschner wire, which comprises the Kirschner wire, wherein the Kirschner wire comprises a needle tip, a needle body and a needle tail; still set up the bolt fastening who takes the arc crotch at ke shi needle tail, specifically include fixing base and bolt, set up the through-hole that cooperation ke shi needle tail passed in the fixing base, still set up the screw that uses with the bolt cooperation in the direction of through-hole axis vertically, screw and through-hole intercommunication, arc crotch setting have solved among the prior art problem that the ke shi needle afterbody is bent and probably is brought on the fixing base.

Description

Kirschner wire fixing device

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a kirschner wire fixing device for treating patellar fracture.

Background

Patellar fractures are clinically common intraarticular fractures, and the treatment goal of the surgical operation is mainly to restore the smoothness of the iliac joint surfaces and the continuity of the knee extension device. At present, the common treatment method for clinically treating the patella fracture is incision reduction internal fixation, and the adopted internal fixation structure is mainly a kirschner wire tension band fixation structure, namely, a kirschner wire is penetrated in the patella, and then a tension band (a steel wire or a steel cable) is wound at two ends of a steel needle to form a fixation structure.

In the operation, after the kirschner wire is driven into the bone, in order to prevent the kirschner wire from loosening and falling off or sliding into the deep part in the later period and prevent a tension band (a steel wire or a steel cable and the like) fixed on the kirschner wire from falling off, the tail part of the kirschner wire needs to be bent, however, the bending treatment has certain requirements on the operation experience and the skill level of a doctor, on one hand, when the tail part of the kirschner wire is bent, the kirschner wire and the steel wire are easy to loosen, so that the fracture is displaced again, on the other hand, when the bent tail part is too large, a hook enters a joint cavity, or stimulates soft tissues such as skin and muscle, so that the iatrogenic injury in the joint can be caused, or the foreign body sensation and the uncomfortable sensation of a patient can be caused.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a kirschner wire fixing device for treating patellar fracture, which solves the problem that the tail of a kirschner wire needs to be bent in the prior art. In order to realize the purpose, the utility model adopts the specific technical scheme that:

the utility model provides a kirschner wire fixing device, includes the kirschner wire, and the kirschner wire includes needle point, needle body, backshank, is provided with bolt fastening structure at the backshank, specifically includes fixing base and bolt, set up the through-hole that cooperation kirschner wire backshank passed in the fixing base, still set up the screw that uses with the bolt cooperation in the direction of through-hole axis vertically.

Further, the length of the through hole is slightly less than or equal to the length of the needle tail, and is generally controlled to be 5-8mm, and preferably 6 mm.

Furthermore, an arc-shaped hook bent towards the needle point direction is further arranged on the fixing seat, and the tail part of the Kirschner wire bent in the traditional Kirschner wire tension band fixing device can be replaced.

Further, in order to stabilize the relative position of the fixing seat and the pin tail, the cross section of the pin tail of the kirschner pin and the cross section of the through hole of the fixing seat can be quadrilateral, hexagonal, octagonal and the like, and is preferably square.

Further, the arc-shaped hook and the fixed seat are integrally formed.

Furthermore, an anti-skidding structure is further arranged on the contact surface of the needle tail of the Kirschner wire and the bolt.

The working principle is as follows: during the operation, squeeze into the bone with the ke shi needle, carry out the fixed firm back of tension band, overlap the fixing base on the ke shi needle tail through the through-hole, then screw into the screw of fixing base with the bolt for the screw head of bolt withstands or pushes down the needle tail in the through-hole, and bolt fastening structure can fix on the ke shi needle, can cut out the unnecessary needle point of needle tail and distal end that surpass the fixing base at last.

The utility model has the beneficial effects that: the bolt fixing structure is adopted to be matched with the traditional Kirschner wire, a bending step of the Kirschner wire is not needed in the operation, the bolt fixing structure is convenient to install and firm in fixation, and the operation difficulty is reduced to a certain extent; in addition, the bolt fixing structure replaces the conventional Kirschner wire tail part bending by arranging the arc-shaped hook on the fixing seat, and the bending step is not needed during the operation, so that the irritation of the conventional Kirschner wire tail part bending to soft tissues such as joint cavities, muscles and skins is avoided.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic sectional view of the fixing base;

FIG. 3 is a schematic diagram of an embodiment of the present invention;

wherein: 1-Kirschner wire, 2-fixing seat (comprising 21-through hole, 22-screw hole, 23-arc hook), 3-bolt, 4-tension band and 5-patella.

Detailed Description

In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only one embodiment of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in the attached drawings 1-2, a kirschner wire fixing device comprises a kirschner wire 1, wherein the kirschner wire comprises a needle point, a needle body and a needle tail, a bolt fixing structure is arranged at the needle tail of the kirschner wire 1, the bolt fixing structure specifically comprises a fixing seat 2 and a bolt 3, a through hole 21 matched with the needle tail 13 of the kirschner wire 1 to penetrate through is arranged in the fixing seat 2, the length of the through hole is slightly smaller than that of the needle tail, and the length of the through hole is about 10 mm; a screw hole 22 matched with the bolt 3 is also arranged in the direction vertical to the axis of the through hole 21, and the lower end of the screw hole is communicated with the through hole; the fixing seat 2 is further provided with an arc-shaped hook 23 which is bent towards the needle point direction, the bent tail portion of the Kirschner wire in the traditional Kirschner wire tension belt fixing device can be replaced, and the arc-shaped hook 23 and the fixing seat 2 are integrally formed.

As shown in fig. 3, when the kirschner wire is used, after the kirschner wire 1 is driven into the patella 5, the tension band 4 is fixed according to the actual operation requirement, the fixing seat 2 is sleeved on the pin tail of the kirschner wire 1 through the through hole 21, and then the bolt 3 is screwed into the screw hole 22 of the fixing seat 2, so that the head of the screw of the bolt 3 abuts against or presses the pin tail fixed in the through hole 22, and the bolt fixing structure can be firmly fixed on the kirschner wire 1.

From the above description of the construction and principles, the present invention is not limited to the above embodiments, but rather, those skilled in the art will appreciate that various modifications, improvements and substitutions are possible, without departing from the scope and spirit of the utility model.

Claims (6)

1. A Kirschner wire fixing device comprises a Kirschner wire, wherein the Kirschner wire comprises a needle tip, a needle body and a needle tail; the novel anti-theft bolt is characterized by further comprising a bolt fixing structure arranged at the needle tail of the Kirschner wire, and specifically comprises a fixing seat and a bolt, wherein a through hole which is matched with the needle tail of the Kirschner wire to penetrate through is formed in the fixing seat, a screw hole which is matched with the bolt to use is further formed in the direction vertical to the axis of the through hole, and the screw hole is communicated with the through hole.

2. The kirschner wire fixing device according to claim 1, wherein the length of the through hole is less than or equal to the length of the pin tail.

3. The kirschner wire fixing device of claim 1, wherein the fixing seat is further provided with an arc hook bending towards the needle point.

4. The kirschner wire fixing device according to claim 1, wherein the cross section of the kirschner wire tail and the cross section of the through hole of the fixing seat are both square.

5. The k-wire fixing device as claimed in claim 3, wherein the curved hook is integrally formed with the fixing base.

6. The kirschner wire fixing device according to claim 4, wherein the contact surface of the kirschner wire tail and the bolt is provided with an anti-slip structure.

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